These data come from a multiple-choice examination given to 379 students in an introductory course in psychology in the Christmas exam period of 1989 at McGill.
The test consisted of 100 multiple-choice items, each having four response options.
Usage
data(Psych101)
Psychkey
Psychresponses
Format
Psychkey
is a numeric vector with the correct responses for each of the 100 questions on the exam.
Psychresponses
is a numeric matrix with students' answers.
Each column represents a question and each row represents a student.
Details
See ksIRT() help page for more information and examples on how to use these data with the KernSmoothIRT package.
Ramsay, J.O. and Abrahamowicz M. (1989).
Binomial regression with monotone splines: A psychometric application.
Journal of the American Statistical Association, 84(408), 906-915.